Problem
First name
Scarlett Porter and Max Young
School
St Marks CofE Primary School
Country
Age
10
C1, C2, C3, MEANS CARD 1, CARD 2, CARD 3 AND SO ON. C7 was the last card in the row.
We think we have got it because:
C1(7)+C2(8)=15
We knew this because 7+8=15.
C2(8)+C3(12)=20
We knew this because 8+12=20
C3(12)+C4(11)=23
We knew this because 12+11=23
C4(11)+C5(5)=16
We knew this because 11+5=16
C5(5)+C6(13)=18
We knew this because 5+13=18
C6(13)+C7(8)=21
We knew this because 13+8=21
As all of these sums work, it means that we have worked it out correctly.